Sash-lock



(No Model.)

. S. ,J. ANDERSON;

SA$H LOCK.

No. 542,401. Patented Tuly 9,1895;

Wu If UNITED STATES :ATENT Error).

.STEPHEN J. ANDERSON, or CHICAGO, ILLINOIS.

. SASH-LOCK.

sl EfiIFlcATloN forming part of Letters Patent No. 542,401, dated July9, 1895. Application filed February 4, 1895- Serial No. 537,191. (Nomodel.)

Z'o all whom it may concern.-

Be it known that I, STEPHEN J. ANDERSON, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Safety Ventilating Sash-Locks, of which the following is a specification. V t

This i-nventionrelat'es to improvements in looks for window-sashes; andit consists in certain peculiaritiesof the construction, novelarrangement, and operation of the various parts thereof, as will behereinafter more fullyset forth and specifically claimed.

The objects of my invention are, first, to provide asash-lock whichshall-be simple and inexpensive in construction, strong and durable, yeteffectivein operation; second, such a lock which by reason of itspeculiar construetion and operation will permit of the lower sash beingraised or the upper sash lowered for the purposes of ventilation andwhen so raised or lowered may be securely locked in said position, and,third, a lock which cannot be manipulated or removed from the outside ofthe window, thereby preventing the rai'singor lowering of the sashes forthe entrance of burglars.

Still another object of my invention is to provide a sash-lock the partsof which can be readily disengaged, so as to allow'the free andunimpeded movement of the sashes.

In order to enable others skilled in the art to which my inventionpertains to make-and use the-same, I will now proceed to describe it,referring to the accompanying drawings, in which Figure 1 is a view inelevation of a portion of the window-casing and a part of its sasheswith mylock in position thereon. Fig. 2 is a vertical sectional View ofa part of the upper and lower sashes with my device attached thereto,taken on line 2 20f Fig. 1. Fig. 3 is a view in elevation, partly insection, of a portion of'the upper and lower sashes, showing theguide-piece of my lock in position. Fig. 4 is aplan view, partly insection, taken on line4 4 of Fig. 3, showing the lock in a position toallow the sashes to be moved for ventilating purposes. Fig. 5 is asimilar view of a part of the-upper and lower sashes,

showing the lock disengaged, so as to permit of the free movement of thesashes. Fig. 6 is a bottom plan view of the securing-plate and the lockor catch to engage the guide-piece. Fig. '7 is a top plan view, partlyin section, of the securing-plate and the lock or catch to engage theguide-piece with the thumb-lever for operating the same removed. Fig. 8is a rear view in elevation of the locking mechanism detached from thesash,'and Fig. 9 is a perspective view of a portion of the'guidepiecefor the upper sash. I

Similar letters refer to like parts throughout the different views ofthe drawings.

A represents a portion of the window-casing; B, the upper sash, and Bthe lower sash thereof, which are provided with meeting-- rails b and b,as usual. These meeting-rails are slightly beveled on their adjacentsurfaces, as at b and the rail b is provided near one of the sides ofthe sash with a vertical slot or groove 6 into which fits and operates aprojection c on the lower portion of the guide-piece O, which piece issecured by means of screws or otherwise to the lower portion of one ofthe side rails of the upper sash. As

shown in the drawings, the guide-piece O is substantially U-shaped incross-section, with a vertical slot 0' extending about its entire lengthon one side of the hollow rib 0 which is for the operation of andengagement with the locking bolt or catch D, as will be presentlyexplained. The lower portion of the slot 0 in the guide-piece O isformed into an enlargement or recess 0 to receive and permit of theinsertion and withdrawal of the locking-boltD when it is desired to lockor un lock the sashes.

To the upper surface of the meeting-rail b of the lower sash is secureda plate E, which is hollow on its lower surface, and is providedcentrally with a slot or opening'e for the reception and operation of alog or pin e( on the sliding plate E,which sliding plate is providedwith side flanges e to overlap the plate E and to hold it in positionthereon. The upper surface of the sliding plate E is provided near eachof its sides with recesses e for the reeeption and operation of suitablelugs or pins on the lower surface of the disk D, which disk is providedwith a cam opening or groove D for the operation or movement thereof,and is provided on its portion adjacent to the guide-piece O with alocking bolt or catch D,

which extends beyond the edge of the sliding plate E, and is then bentat a right angle and then inwardly, as is plainly shown in Figs. 1 to 7,inclusive, of the drawings. On the upper end of the pin e of the slidingplate E is secured a button G, having a thumb-lever g to turn the same.This button is provided on its lower surface with aneccentrically-located pin g, which operates in the cam opening or grooveD of the disk D and adjusts the locking-bolt D thereof.

As is clearly shown in Fig. 8 of the drawings, the sliding plate E isprovided on its surface, adjacent to the guide-piece C, withcorrugations e, which are adapted to engage similarly-formedcorrugations or teeth 0 on the lower portion of the rib c of theguidepiece.

From the foregoing, and by reference to the drawings, it will be seenand clearly understood that when the parts are secured in position asabove set forth the locking bolt or catch D may be inserted into therecess on enlargement c of the guide-piece C by turning the thumb-leverg to the position indicated by dotted lines in Fig. 5, of the drawings,which operation will force the bolt outwardly into said recess, when theslidingplate E may be moved toward the rib c of the guide-piece ortoward the window-casing, when the hook or catch 01' of thesecuring-bolt D will be forced to the rear of the hollow rib 0 when thesame may be caused to engage therewith by turning the thumb lever g tothe position indicated by continuous linesin Fig. 4, in which positioneither sash may be moved the length of the guide-piece, thus:

permitting ventilation at the top or bottom of the sash, as isdesired,and from which position it will be impossible to raise or lowereither sash a greater distance or to allow of the entrance of a personthrough'the window. When it is desired to lock thesashes in a positionso as to entirely close the window,

the thumb-lever g may be turned to theposii guide-piece, the upperportion of said recess or 5 5 enlargement is formed with a rearwardbevel a which will force the bolt if it should contact therewithforwardly. Byproviding the guide-piece C with the extension 0, whichfits and operates in the slot or groove 12 of the meeting-rail b, it isobvious that the guide piece could not be pried off by means of aninstrument inserted between the meetingrails,'and besides the extendedportion 0' fitting in the said groove aifords a means for keeping thesashes in alignment, and thus in- ?ures perfect operation of the sashesand my ock.

Ifit is desired to raise the lower sash its entire length or to lowerthe upper one entirely, the loclebar D may disengaged from theguidepiece and placed in the position indicatedby continuous lines inFig. 5, in which position the sashes may be moved without obstruction orimpediment.

Having thus fully described my invention, what- I claim as new, anddesire to secure by Letters Patent, is-

1. The combination of a guide-piece, secured to the upper sash andhaving a vertical slot or groove in one of its sides, said grooveterminating at its lower portion in an enlargement or recess, and aprojection at its bottom to fit in a groove in the lower sash, with alocking bolt or catch adjustably secured to the lower sash and adaptedto operate in the slot of the guide-piece and to engage said piece,substantially as described.

2. The combination of the guide-piece C, having the hollow vertical rib0 provided with the extension 0, and teeth or corrugations c, and thevertical slot 0, and recess a, secured to the upper sash, with theslotted plate E, secured to the lower sash, the sliding plate E,movablysecured on the plate E, and having the recess (2 pin e, and teethor corrugations e, the disk D, having the camgroove or opening D andlocking bolt or catch D, and the button G, secured to the pin 6, andprovided witht-he thumb-lever g, and ice eccentrically located pin g,all constructed, arranged, andoperating substantially as and for thepurpose set forth.

STEPHEN J. AN DE RSON.

Witnesses:

CHAS. C. TILLMAN, E. A. DUGGAN.

